Monoazodyestuffs



Patented Oct. 12, 1937 r relates to' monoazo dyestuffs, m the general formula:

for a radicle of the Zs stands for hydro a sulfonic acid group, of the group consisting zene and naphthalene Richard Fleischhauer,

near Frankfort- No Drawing. Application June ore particularly Fechenheim, and

ors to General Anilin Carl Theo Schultis, on-the DYESTUFFS Frankfort-on the-Main- Bergen; -Main, Germany, assigne-Works, Inc., New York,

Y., a corporation of Delaware valuable new to those of NH CO-a1kyle1ie-Oaryl V v ditions stated therein.

and aryl means a member of the radicles of the benseries.

The new dyestuffs are obtained by combining the diazo compounds of aromatic amines of the following formula;

(wherein Ri'ah cation) with acyl naphthol-disulfo of an aryloxy f The present new d very bright red shades, water and perspiration.

The diazo Components 1 s have the above sad'sigmfiated derivatives of peri;aminonic acids containing the radical atty acid.

yestuffs dye wool and silk fast to fulling, light, seased for the present for example by con- 6, 1936, Serial No.

In Germany August 2, 1935 4 Claims.:

In order to further illustrate our invention the following examples are given. However, We wish ited to the particular products or reaction con- Example 1 'I'he diazo solution prepared in the usual manner by starting from 34.4 parts of 3-amino-6- methyl-benzenesulfo e N cyclohexylphenylamide is combined in the presence of sodium carbonate with the solution of 50 parts of 1-(2'- "chloro-phenoxyacetylamino) -8-naphthol 4,6-disulfonic acid, mula:

V The dyestufi formed of the foron Nncocmo is isolated anddried. It forms a red powder,- solule in V very good fastness to 'fulling, light, sea-water and perspiration.

Example 2 29.8 parts of 3-amino-6-methyl-benzene-1-sulfo -di- (nbuty1 -amideiare diazotized in the .usual mann'erfand combinedjwith 50 parts :of 1;- (2.;- chloro-phenoxyacetyl-amino) 8,.- naphthol 4,6- disulfonic .acid in the presence of sodium care bonate. The dyestufi formed of the formula:

CH: "is isolated and dried.

' It forms a red powder, a red color, dyeing wool or soluble in water with silk bright red shades of very good fastness to fulling, light, sea-water and perspiration.

By employing 1'- (2 -chloro-phenoxyacetylamino) -8-naphthol-3,6-disulfonic acid a some- What more. bluishred dyeing product ofequal PFQPQIl ieS is obtained.- 5

PATENT alc-;,

it to be understood that our invention is not lim- Example 3 35.2 parts of 3-aminobenzene-l-sulio-dibenzylamide are diazotized in the usual manner and combined with 50 parts of 1-(2'-ch1oro-phenoxyacetylamino)-8-naphthol-4,6-disulf0nic acid in the presence of sodium carbonate. The dyestufi formed of the formula:

silk red shades of very good fastness to fulling, light, sea-water and perspiration.

Example 6 35 parts of 3-amino-6-methyl-benzenel-sulfo- N-di-cyclohexyl-amine are diazotized in the usual manner. The diazo solution obtained is allowed to run into a solution of 49 parts of 1-(2'-chlorois isolated and dried. It is a red powder, soluble in water with a red color, dyeing wool or silk very clear red shades of good fastness to fulling, light, seawater and perspiration.

HOaS

Example 4 33 parts of 4-aminobenzene-l-sulfo-N-cyclohexylphenyl-amide are diazotized in the usual manner and combined with 50 parts of 1(2- chloro -phenoxyacety1amino) 8 -naphthol- 4,6 disulfonic acid in the presence of sodium carbonate. The dyestufi formed of the formula:

Ha Ha C-C bright red shades of very good fastness to fulling, light, sea-water and perspiration.

SOaH red powder, soluble Example 5 28.4 parts of 3-amin0benzene-l-sulfo-di- (nbutyl) -amide are diazotized in the usual manner and combined with 47 parts of 1(4 =methyl-phenoxyacetylamino 8 naphthol L6 disulfonic acid in the presence of sodium carbonate. The dyestufi formed of the formula:

CH3CHaCH2C 1\12 N--SO HOaS is isolated and dried. It forms a red powder, soluble in water with a red color, dyeing wool or phenoxyacetylamino) 8 -naphthol- 3 ,6 -disu1fonic acid containing an excess of sodium carbonate. When the combination is complete the dyestuff formed of the formula:

OH NH'C O CHzO is isolated and. dried. It forms a red powder, soluble in water with a red color, dyeing wool or silk bright red shades of very good fastness to' fulling, light, sea-water and perspiration.

Instead of the combining components employed in the above examples there may be employed peri-aminonaphthol-disulfonic acids containing the radicals of other aryloxy fatty acids such as OE NHCOCHQO for example phenoxy-propionic acid, naphthoxyacetic acids and substituted derivatives thereof.

We claim: 1. The monoazo dyestuffs of the general formula:

wherein R1 and R2 stand for a member of the group consisting of aliphatic, cycloaliphatic,

phenyl, naphthyl and benzyl radicles, R3, stands for a radicle of therbenzene series, one of the Zs 3. The monoazo dyestufl of the formula;

OH NHOOOH2O 2 V H s stands for hydrogen and the other one fora sulfonic acid group, and aryl means a member of the group consisting of the radicles of the benzene and naphthalene series, which dyestuffs yield on fibers, especially wool or silk, bright red shades of CHaCHzCHgCHz CHaCHgGHzO? V N-S O 7 Boss very good fastness to fulling, light, sea -water and perspiration. V V

2. The monoazo dyestlmof the formula:

which dyestuif represents a red powder, soluble in water; dyeing wool and .silk bright red shades of very good 'fastness to fulling, light, sea-water and perspiration which dyestufi represents a red powder, soluble in water, dyeing Wool and silk very clear red shades of good fastness to fulling, light, sea-water and perspiration.

4. The monoazo dyestuff of the formula:

OH NHGOOHaO S 0311 CH:

which dyestufi represents a red powder, soluble in water, dyeing wool and silk bright red shades 0H Nnooomo SOiH of very good fastness to fulling, light, sea-water and perspiration.

RICHARD FLEISCHHAUER. CARL THEO SCHULTIS. 

